796
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Ran 15 Feb 2018 11:32PM UTC

Jobs 4

Files 51

Run time 3min

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Build # 796

Build Type

push

travis-ci

Committed by

web-flow

Commit Message

Avoid seeking on import (#188)

* Don't seek on imports

(other than the possible seek for custom importers)

We were seeking to handle blob markers. This has two major drawbacks:

1. It wasn't possible to use a non-seekable file.  A use case for
   export/import is to copy database data.  An intermediate file, and
   associated I/O, could be avoided using a pipe, but pipes aren't
   seekable.

2. Seeks cause file-buffer data to be discarded, making IO far more
   expensive.

We didn't really need blob markers, because the preceeding blob data
records serve as markers.  (Now we're stuck with them for backward
compatibility.)

* Make cp's buffer size larger and configurable.

* Use the storage temprary directory when importing blobs

To avoid an extra copy.

Also, allow the copy (cp) buffer sie to be overridden on export.

(I see no obvious way to plumb it on import. :( )

* Oops, need to use a binary literal (Python 3)

* Respond to PR comments

Run Details

6424 of 8533 relevant lines covered (75.28%)

2.99 hits per line

Jobs

ID	Job ID	Ran	Coverage
3	796.3	15 Feb 2018 11:32PM UTC	74.64	Travis Job 796.3
4	796.4	15 Feb 2018 11:33PM UTC	74.96	Travis Job 796.4
5	796.5	15 Feb 2018 11:32PM UTC	74.89	Travis Job 796.5
6	796.6	15 Feb 2018 11:36PM UTC	74.89	Travis Job 796.6

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